feat(brbe): add BRBE support for NS world
This patch enables access to the branch record buffer control registers
in non-secure EL2 and EL1 using the new build option ENABLE_BRBE_FOR_NS.
It is disabled for all secure world, and cannot be used with ENABLE_RME.
This option is disabled by default, however, the FVP platform makefile
enables it for FVP builds.
Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: I576a49d446a8a73286ea6417c16bd0b8de71fca0
diff --git a/plat/arm/board/fvp/platform.mk b/plat/arm/board/fvp/platform.mk
index 19f913e..d89e91f 100644
--- a/plat/arm/board/fvp/platform.mk
+++ b/plat/arm/board/fvp/platform.mk
@@ -389,6 +389,15 @@
# enable trace buffer control registers access to NS by default
ENABLE_TRBE_FOR_NS := 1
+# enable branch record buffer control registers access in NS by default
+# only enable for aarch64
+# do not enable when ENABLE_RME=1
+ifeq (${ARCH}, aarch64)
+ifeq (${ENABLE_RME},0)
+ ENABLE_BRBE_FOR_NS := 1
+endif
+endif
+
# enable trace system registers access to NS by default
ENABLE_SYS_REG_TRACE_FOR_NS := 1